Window-scaffold.



No. 676,303. I Patented June n, 1901. A. n. CRAMER.

- WINDOW SCAFFOLD.

(Applicatidu filed Dec. 30, 1899.)

(No Model.)

Mmlllllm I Tm: norms PETER. 50., PMOTOUTHQ. wuumomu. n c.

" m me STAT-Es PATENT 'orricie;

ALBERT D. CRAMER, or PHILADELPHIA, PENNSYLVANIA.

WIN DOW- SCA FFOLD.

SPECIFICATION forming part Of Letters Patent NO. 676,303, dated June 11,1901.

Application filed December 30, 1899. Serial No. 742,039. (Nomodel) V ToaZZ whom it may concern.-

Be it known that I, ALBERT D. CRAMER, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia'and State ofPennsylvania, have invented a new and useful Window-Scaffold, of whichthe following is a specification.

This invention is a safety appliance adapted to be attached to awindow-sill for the purpose of supporting'a person sitting in the windowduring the operation of washing and polishing the outer side of thewindow.

The object of the invention is to provide an exceedingly cheap andsimple appliance which can be quickly and easily attached to anddetached from the window-sill and carried about from place to place, sothat each cleaner can carry the attachment and arrange the same.

With these objectsin View the invention consists in thepeculiar-construction of the various parts and in their novelcombination and arrangement, all of which will be fully describedherein, and pointed out in the claim.

In the drawings forming a part of this specification, Figure l is aperspective View of the clamp adapted to be attached to the windowsillupon the inner side. Fig. 2 is a detail view of the strap andback-support. Fig. 3 is a detail perspective view showing the manner ofconnecting the strap and clamp. Fig. 4 is a detail sectional viewshowing the end of the clampingscrew. Fig. 5 is a detail top View of theend of the clamping-yoke, and Fig. 6 is a detail perspective view of aslightlymodified form of the opposite end.

In carrying out my invention I employ a clamp, which is intended to besecured to the inner side or edge of the window-sill, said clampcomprising an essentially U-shaped bar A, having its lower end enlarged,as shown at A, and the upper face of said enlarged end being roughened,as shown at A and intended to engage the under side of the windowsill.The upper end of the U-shaped yoke is longer than the other one and alsoenlarged, as most clearly shown in Fig. 5, and is constructed with ahorizontally-elongated eye or loop A which eye or loop stands at rightangles to the arm upon which it is located and is intended to receive astrap B, which is connected to the back-support G. A buckle B is clippedon each end of the strap, and the end "of the strap is then passedthrough the loop A and then doubled back upon itself and secured to thebuckle before the device is com pleted. A clamping-screw D passesthrough the upper member of the clamping-yoke A in alinement with theenlargement A upon the other arm of the yoke and has a head D swiveledthereon, said swiveled head having its lower face provided with a rubbercushion D to prevent disfiguring the upper face of the window-sill,against which the said head D is forced for the purpose of securing theclamp to the window-sill. The back-support C is securely fastened to thestrap B and is held in its proper position by a suitable strip E ofmetal or other suitable material, and inasmuch as the strap B isprovided with suitable adjusting-buckles B it will be readily understoodthat the strap can be adjusted to accommodate the window and the personusing the device. devices, one arranged at each end of the sill,

{and each end of the strip is connected to the loopcarried'by the clamp,the strap passing 7 of which being roughened will cause it toengage'with the window-casing and prevent its slipping.

' Having thus fully described my invention, what I claim as new, anddesire to secureby Letters Patent of the United States, is-

A window-scaffold comprising in combination the essentially Ushaped barA having its lower end A notched and roughened upon its uppersurface,its upper end having an elon- There are two clamping gated eyeorl'oop A the back-support C na va.- suitable cushion Dian efi said-permts being ing the strap B attached thereto, which strap arranged andadapted to operas-fie, substanis adapted to engage the eye or 100p A thetially as shown and described. strip E for holding the support in properposi- 5 tion, and a elamping-screwD passing through \Vitnesses:

the upper member of the U-shaped bar hav- HARRY STEWART, ing a head D"swiveled thereon and carrying W. FINLEY.

ALBERT 1). CRAMERQ

